Technique Form, fill and seal
Packaging machines - Dry goods and small items

The words form, fill and seal are used to designate the technique for packaging products in sealed plastic bags shown in figure 9. It consists of :

• form a container by "sleeving" a continuous sheet, usually plastic, sometimes coated paper to make it heat-sealable;

• fill the sleeve from the top, after heat-sealing it lengthwise;

• Weigh the quantity required for each bag;

• and, finally, seal each bag laterally.

This technique, which allows high speeds (up to 150 pouches per minute, or even more with small pouches), is particularly well-suited to packaging powders of all types, provided they flow smoothly and continuously, without clogging or blocking the flow, i.e. flour, sugar, instant coffee, plaster, small...